机械密封是易损件。一般情况下，机械密封每小时有几滴液体泄漏是正常的，机械密封的zui大泄漏量为5立方厘米/小时。超过zui大泄漏量就应更换机械密封。对泄漏物的排放应根据环保要求妥善收集处理。
定期检查
按要求进行定期检查，会延长泵的工作寿命。
每日检查：
检查是否有异常噪音或震动，泵的轴承处，泵体和电机轴承处的温升情况。
每周检查：
对泵的进，出口温度，压力，转速，电流，过滤器前后压差及泵体温度等参数进行检查统计。
如有备用泵组，那么每周开动备用机组至少10分钟，确保备用及时。
季度检查：
有必要停机，重新检查对中情况。
对照铭牌，检查泵组的流量，压力，功率，温度等所有参数是否相符。
检查泵与原动机的连接对中。
HSA螺杆泵型号：(R代表螺杆右旋，L代表螺杆左旋)下面为右旋螺杆泵型号：
HSA螺杆泵型号五：
HSA20R38R4PY HSAF20R38R4PY HSAD20R38R4PY HSAFK20R38R4PY HSAS20R38R4PY
HSA20R46R4PY HSAF20R46R4PY HSAD20R46R4PY HSAFK20R46R4PY HSAS20R46R4PY
HSA40R38R4PY HSAF40R38R4PY HSAR40R38R4PY HSAFK40R38R4PY HSAS40R38R4PY
HSA40R46R4PY HSAF40R46R4PY HSAR40R46R4PY HSAFK40R46R4PY HSAS40R46R4PY
HSA80R36R4PY HSAF80R36R4PY HSAD80R36R4PY HSAFK80R36R4PY HSAS80R36R4PY
HSA80R46R4PY HSAF80R46R4PY HSAD80R46R4PY HSAFK80R46R4PY HSAS80R46R4PY
HSA120R42R4PY HSAF120R42R4PY HSAD120R42R4PY HSAFK120R42R4PY HSAS120R42R4PY
HSA120R46R4PY HSAF120R46R4PY HSAD120R46R4PY HSAFK120R46R4PY HSAS120R46R4PY
HSA210R36R4PY HSAF210R36R4PY HSAD210R36R4PY HSAFK210R36R4PY HSAS210R36R4PY
HSA210R40R4PY HSAF210R40R4PY HSAD210R40R4PY HSAFK210R40R4PY HSAS210R40R4PY
HSA210R46R4PY HSAF210R46R4PY HSAD210R46R4PY HSAFK210R46R4PY HSAS210R46R4PY
HSA280R43R4PY HSAF280R43R4PY HSAD280R43R4PY HSAFK280R43R4PY HSAS280R43R4PY
HSA280R46R4PY HSAF280R46R4PY HSAD280R46R4PY HSAFK280R46R4PY HSAS280R46R4PY
HSA440R36R4PY HSAF440R36R4PY HSAR440R36R4PY HSAFK440R36R4PY HSAS440R36R4PY
HSA440R40R4PY HSAF440R40R4PY HSAR440R40R4PY HSAFK440R40R4PY HSAS440R40R4PY
HSA440R46R4PY HSAF440R46R4PY HSAR440R46R4PY HSAFK440R46R4PY HSAS440R46R4PY
HSA660R40R4PY HSAF660R40R4PY HSAD660R40R4PY HSAFK660R40R4PY HSAS660R40R4PY
HSA660R44R4PY HSAF660R44R4PY HSAD660R44R4PY HSAFK660R44R4PY HSAS660R44R4PY
HSA螺杆泵型号一：
HSA20-38 HSAF20-38 HSAD20-38 HSAFK20-38 HSAS20-38
HSA20-46 HSAF20-46 HSAD20-46 HSAFK20-46 HSAS20-46
HSA40-38 HSAF40-38 HSAD40-38 HSAFK40-38 HSAS40-38
HSA40-46 HSAF40-46 HSAD40-46 HSAFK40-46 HSAS40-46
HSA80-36 HSAF80-36 HSAD80-36 HSAFK80-36 HSAS80-36
HSA80-46 HSAF80-46 HSAD80-46 HSAFK80-46 HSAS80-46
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS120-42
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS120-46
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS210-36
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS210-40
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS210-46
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS280-43
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS280-46
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS440-36
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS440-40
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS440-46
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS660-40
HSAnbsp; HSAFnbsp; HSADnbsp; HSAFKnbsp; HSAS660-44